Lag every 5 seconds

i get lag spikes like every five seconds but my ping stays fine, i think its packet loss but i dont know what that means can somebody help me please i dont lag on any other game. and im on wifi

Consider using ethernet instead of wifi. If you are unable to use ethernet try using a mobile hotspot or even better: mobile tethering.

see here:

It’s a blizzard server issue.

You can check if you’re losing packets here for future reference:
https:// packetlosstest .com/